Gadd11 chord
G added eleventh
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>G
F#
G
G#
A
A#
B3
C
C#
D
D#
E
F
F#
G
B
C
C
C#
D5
D#
E
F
F#
G
G#
A
A#
B
C
D
E
D#
E
F
F#
G1
G#
A
A#
B
C
C#
D
D#
E
G
A
G#
A
A#
B
C11
C#
D
D#
E
F
F#
G
G#
A
C
3
5
7
10
The Gadd11 chord has the formula 1, 3, 5, 11 with notes G, B, D, C
The added eleventh chord can be built by taking a major chord and adding the 11th of the scale. It is somewhat dissonant because the 3rd and 11th are one semitone apart.